1 /**
2  * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4  *
5  * This code is free software; you can redistribute it and/or modify it
6  * under the terms of the GNU General Public License version 2 only, as
7  * published by the Free Software Foundation.
8  *
9  * This code is distributed in the hope that it will be useful, but WITHOUT
10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12  * version 2 for more details (a copy is included in the LICENSE file that
13  * accompanied this code).
14  *
15  * You should have received a copy of the GNU General Public License version
16  * 2 along with this work; if not, write to the Free Software Foundation,
17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18  *
19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20  * or visit www.oracle.com if you need additional information or have any
21  * questions.
22  */
23 
24 package simp;
25 
26 import java.io.IOException;
27 import java.util.Locale;
28 import javax.imageio.IIOException;
29 import javax.imageio.ImageReader;
30 import javax.imageio.spi.ImageReaderSpi;
31 import javax.imageio.stream.ImageInputStream;
32 
33 public class SIMPImageReaderSpi extends ImageReaderSpi {
34 
35     private static final String[] FORMATNAMES = {"simp, SIMP"};
36     private static final String[] SUFFIXES = {"simp"};
37     private static final String[] MIMETYPES = {"image/simp"};
38 
SIMPImageReaderSpi()39     public SIMPImageReaderSpi() {
40         super("J Duke",                   // vendor
41               "1.0",                      // version
42                FORMATNAMES,               // format names
43                SUFFIXES,                  // file suffixes
44                MIMETYPES,                 // mimetypes
45                "simp.SIMPImageReader",    // reader class name
46                new Class<?>[] { ImageInputStream.class }, // input types
47                null,              // writer class names. TBD.
48                true,              // supports native metadata,
49                null,              // [no] native stream metadata format
50                null,              // [no] native stream metadata class
51                null,              // [no] native extra stream metadata format
52                null,              // [no] native extra stream metadata class
53                true,              // supports standard metadata,
54                "simp_metadata_1.0",       // metadata format name,
55                "simp.SIMPMetadataFormat", // metadata format class name
56                null,              // [no] extra image metadata format
57                null               // [no] extra image metadata format class
58          );
59          System.out.println("INIT SIMPImageReaderSpi");
60     }
61 
getDescription(Locale locale)62     public String getDescription(Locale locale) {
63         return "SIMPle Image Format Reader";
64     }
65 
canDecodeInput(Object source)66     public boolean canDecodeInput(Object source) throws IOException {
67         if (!(source instanceof ImageInputStream)) {
68             return false;
69         }
70         ImageInputStream stream = (ImageInputStream)source;
71 
72         stream.mark();
73         try {
74              byte[] sig = new byte[4];
75              stream.read(sig);
76              return sig[0]=='S' && sig[1]=='I' && sig[2]=='M' && sig[3]=='P';
77         } finally {
78             stream.reset();
79         }
80     }
81 
createReaderInstance(Object extension)82     public ImageReader createReaderInstance(Object extension)
83         throws IIOException {
84         return new SIMPImageReader(this);
85     }
86 }
87